CVE-2026-4359
Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
CVE-2026-4359- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 2.0 Low
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L - Weakness
- CWE-158
- Updated
- 2026-11-02
EUVDEUVD-2026-12640
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
EUVD-2026-12640- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3548-98v9-6pq6
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP...
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
GHSA-3548-98v9-6pq6- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 2.0 Low
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L - Weakness
- CWE-158
- Updated
- 2026-11-02
NVD
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
CVE-2026-4359- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 2.0 Low
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L - CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-158
- Updated
- 2026-11-02
OSVALPINE-CVE-2026-4359
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
ALPINE-CVE-2026-4359- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-03
OSV
Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
CVE-2026-4359- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Weakness
- CWE-158
- Updated
- 2026-11-02
Show 9 moreShow less
OSVDEBIAN-CVE-2026-4359
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
DEBIAN-CVE-2026-4359- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVJLSEC-2026-182
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
JLSEC-2026-182- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVOESA-2026-1742
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1742- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-1743
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1743- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-1744
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1744- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-1745
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1745- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-1746
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1746- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-1747
mongo-c-driver security update
mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.
Security Fix(es):
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)
- Record
OESA-2026-1747- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-4359
A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
- Record
UBUNTU-CVE-2026-4359- CVSS 4.0
- 2.0 Low
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 2.0 Low
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mongo-c-driverAlpine:v3.24 |
before 1.30.14-r0 | 1.30.14-r0 |
mongo-c-driverDebian:12 |
before 1.23.1-1+deb12u3, plus listed versions 1.23.1-11.23.1-1+deb12u11.23.1-1+deb12u2 |
1.23.1-1+deb12u3 |
mongo-c-driverDebian:13 |
before 1.30.4-1+deb13u2, plus listed versions 1.30.4-11.30.4-1+deb13u1 |
1.30.4-1+deb13u2 |
mongo-c-driverDebian:14 |
before 2.2.3-1, plus listed versions 1.30.4-12.0.2-12.1.0-12.1.1-12.1.2-12.2.0-12.2.1-12.2.2-1 |
2.2.3-1 |
MongoC_jllJulia |
before 1.30.8+0 | 1.30.8+0 |
mongo-c-driveropenEuler:24.03-LTS-SP1 |
before 1.30.6-2.oe2403sp1 | 1.30.6-2.oe2403sp1 |
mongo-c-driveropenEuler:24.03-LTS-SP2 |
before 1.30.6-2.oe2403sp2 | 1.30.6-2.oe2403sp2 |
mongo-c-driveropenEuler:24.03-LTS-SP3 |
before 1.30.6-2.oe2403sp3 | 1.30.6-2.oe2403sp3 |
mongo-c-driveropenEuler:20.03-LTS-SP4 From an advisory covering 2 CVEs |
before 1.27.4-2.oe2003sp4 | 1.27.4-2.oe2003sp4 |
mongo-c-driveropenEuler:22.03-LTS-SP4 |
before 1.30.6-2.oe2203sp4 | 1.30.6-2.oe2203sp4 |
Show 7 moreShow less
| Package | Affected | Fixed |
|---|---|---|
mongo-c-driveropenEuler:24.03-LTS |
before 1.30.6-2.oe2403 | 1.30.6-2.oe2403 |
mongo-c-driverUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 1.15.0-11.15.1-11.15.2-11.16.0-11.16.1-11.16.1-1build11.16.1-1build21.16.1-1ubuntu0.1~esm1 |
None known |
mongo-c-driverUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 1.18.0-11.19.1-11.19.2-11.20.0-11.20.0-1build1 Show 4 moreShow less1.20.1-11.21.0-11.21.0-1build11.21.0-1ubuntu0.1~esm1 |
None known |
mongo-c-driverUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 1.24.3-11.24.4-11.25.1-11.25.2-11.25.4-1 Show 4 moreShow less1.26.0-11.26.0-1.1ubuntu11.26.0-1.1ubuntu21.26.0-1.1ubuntu2+esm1 |
None known |
mongo-c-driverUbuntu:25.10 |
All versions, plus listed versions 1.30.2-11.30.4-1ubuntu1 |
None known |
mongo-c-driverUbuntu:26.10 |
All versions, plus listed versions 2.2.2-12.3.1-12.3.2-12.3.3-1build12.5.0-1 |
None known |
mongo-c-driverUbuntu:26.04:LTS |
All versions, plus listed versions 1.30.4-1ubuntu12.2.0-12.2.1-12.2.2-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-4359 is a low vulnerability (CVSS 2.0) in Mongodb C Driver, published March 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. Fixed in mongo-c-driver 1.30.14-r0.
References
jira.mongodb.org/browse/CDRIVER-6251
nvd.nist.gov/vuln/detail/CVE-2026-4359
github.com/advisories/GHSA-3548-98v9-6pq6
security.alpinelinux.org/vuln/CVE-2026-4359
security-tracker.debian.org/tracker/CVE-2026-4359
Show 9 moreShow less
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-1742
ubuntu.com/security/CVE-2026-4359
cve.org/CVERecord?id=CVE-2026-4359